ALSA: sparc: More constifications
[muen/linux.git] / sound / sparc / cs4231.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Driver for CS4231 sound chips found on Sparcs.
4  * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
5  *
6  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
7  * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
8  * and also sound/isa/cs423x/cs4231_lib.c which is:
9  * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
10  */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/delay.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/moduleparam.h>
18 #include <linux/irq.h>
19 #include <linux/io.h>
20 #include <linux/of.h>
21 #include <linux/of_device.h>
22
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/info.h>
26 #include <sound/control.h>
27 #include <sound/timer.h>
28 #include <sound/initval.h>
29 #include <sound/pcm_params.h>
30
31 #ifdef CONFIG_SBUS
32 #define SBUS_SUPPORT
33 #endif
34
35 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
36 #define EBUS_SUPPORT
37 #include <linux/pci.h>
38 #include <asm/ebus_dma.h>
39 #endif
40
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
43 /* Enable this card */
44 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
45
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
52 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
53 MODULE_DESCRIPTION("Sun CS4231");
54 MODULE_LICENSE("GPL");
55 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
56
57 #ifdef SBUS_SUPPORT
58 struct sbus_dma_info {
59        spinlock_t       lock;   /* DMA access lock */
60        int              dir;
61        void __iomem     *regs;
62 };
63 #endif
64
65 struct snd_cs4231;
66 struct cs4231_dma_control {
67         void            (*prepare)(struct cs4231_dma_control *dma_cont,
68                                    int dir);
69         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
70         int             (*request)(struct cs4231_dma_control *dma_cont,
71                                    dma_addr_t bus_addr, size_t len);
72         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
73 #ifdef EBUS_SUPPORT
74         struct          ebus_dma_info   ebus_info;
75 #endif
76 #ifdef SBUS_SUPPORT
77         struct          sbus_dma_info   sbus_info;
78 #endif
79 };
80
81 struct snd_cs4231 {
82         spinlock_t              lock;   /* registers access lock */
83         void __iomem            *port;
84
85         struct cs4231_dma_control       p_dma;
86         struct cs4231_dma_control       c_dma;
87
88         u32                     flags;
89 #define CS4231_FLAG_EBUS        0x00000001
90 #define CS4231_FLAG_PLAYBACK    0x00000002
91 #define CS4231_FLAG_CAPTURE     0x00000004
92
93         struct snd_card         *card;
94         struct snd_pcm          *pcm;
95         struct snd_pcm_substream        *playback_substream;
96         unsigned int            p_periods_sent;
97         struct snd_pcm_substream        *capture_substream;
98         unsigned int            c_periods_sent;
99         struct snd_timer        *timer;
100
101         unsigned short mode;
102 #define CS4231_MODE_NONE        0x0000
103 #define CS4231_MODE_PLAY        0x0001
104 #define CS4231_MODE_RECORD      0x0002
105 #define CS4231_MODE_TIMER       0x0004
106 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
107                                  CS4231_MODE_TIMER)
108
109         unsigned char           image[32];      /* registers image */
110         int                     mce_bit;
111         int                     calibrate_mute;
112         struct mutex            mce_mutex;      /* mutex for mce register */
113         struct mutex            open_mutex;     /* mutex for ALSA open/close */
114
115         struct platform_device  *op;
116         unsigned int            irq[2];
117         unsigned int            regs_size;
118         struct snd_cs4231       *next;
119 };
120
121 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
122  * now....  -DaveM
123  */
124
125 /* IO ports */
126 #include <sound/cs4231-regs.h>
127
128 /* XXX offsets are different than PC ISA chips... */
129 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
130
131 /* SBUS DMA register defines.  */
132
133 #define APCCSR  0x10UL  /* APC DMA CSR */
134 #define APCCVA  0x20UL  /* APC Capture DMA Address */
135 #define APCCC   0x24UL  /* APC Capture Count */
136 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
137 #define APCCNC  0x2cUL  /* APC Capture Next Count */
138 #define APCPVA  0x30UL  /* APC Play DMA Address */
139 #define APCPC   0x34UL  /* APC Play Count */
140 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
141 #define APCPNC  0x3cUL  /* APC Play Next Count */
142
143 /* Defines for SBUS DMA-routines */
144
145 #define APCVA  0x0UL    /* APC DMA Address */
146 #define APCC   0x4UL    /* APC Count */
147 #define APCNVA 0x8UL    /* APC DMA Next Address */
148 #define APCNC  0xcUL    /* APC Next Count */
149 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
150 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
151
152 /* APCCSR bits */
153
154 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
155 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
156 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
157 #define APC_GENL_INT    0x100000 /* General interrupt */
158 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
159 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
160 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
161 #define APC_XINT_GENL   0x10000  /* Error ext intr */
162 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
163 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
164 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
165 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
166 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
167 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
168 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
169 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
170 #define APC_PPAUSE      0x80     /* Pause the play DMA */
171 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
172 #define APC_CDC_RESET   0x20     /* CODEC RESET */
173 #define APC_PDMA_READY  0x08     /* Play DMA Go */
174 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
175 #define APC_CHIP_RESET  0x01     /* Reset the chip */
176
177 /* EBUS DMA register offsets  */
178
179 #define EBDMA_CSR       0x00UL  /* Control/Status */
180 #define EBDMA_ADDR      0x04UL  /* DMA Address */
181 #define EBDMA_COUNT     0x08UL  /* DMA Count */
182
183 /*
184  *  Some variables
185  */
186
187 static const unsigned char freq_bits[14] = {
188         /* 5510 */      0x00 | CS4231_XTAL2,
189         /* 6620 */      0x0E | CS4231_XTAL2,
190         /* 8000 */      0x00 | CS4231_XTAL1,
191         /* 9600 */      0x0E | CS4231_XTAL1,
192         /* 11025 */     0x02 | CS4231_XTAL2,
193         /* 16000 */     0x02 | CS4231_XTAL1,
194         /* 18900 */     0x04 | CS4231_XTAL2,
195         /* 22050 */     0x06 | CS4231_XTAL2,
196         /* 27042 */     0x04 | CS4231_XTAL1,
197         /* 32000 */     0x06 | CS4231_XTAL1,
198         /* 33075 */     0x0C | CS4231_XTAL2,
199         /* 37800 */     0x08 | CS4231_XTAL2,
200         /* 44100 */     0x0A | CS4231_XTAL2,
201         /* 48000 */     0x0C | CS4231_XTAL1
202 };
203
204 static const unsigned int rates[14] = {
205         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
206         27042, 32000, 33075, 37800, 44100, 48000
207 };
208
209 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
210         .count  = ARRAY_SIZE(rates),
211         .list   = rates,
212 };
213
214 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
215 {
216         return snd_pcm_hw_constraint_list(runtime, 0,
217                                           SNDRV_PCM_HW_PARAM_RATE,
218                                           &hw_constraints_rates);
219 }
220
221 static const unsigned char snd_cs4231_original_image[32] =
222 {
223         0x00,                   /* 00/00 - lic */
224         0x00,                   /* 01/01 - ric */
225         0x9f,                   /* 02/02 - la1ic */
226         0x9f,                   /* 03/03 - ra1ic */
227         0x9f,                   /* 04/04 - la2ic */
228         0x9f,                   /* 05/05 - ra2ic */
229         0xbf,                   /* 06/06 - loc */
230         0xbf,                   /* 07/07 - roc */
231         0x20,                   /* 08/08 - pdfr */
232         CS4231_AUTOCALIB,       /* 09/09 - ic */
233         0x00,                   /* 0a/10 - pc */
234         0x00,                   /* 0b/11 - ti */
235         CS4231_MODE2,           /* 0c/12 - mi */
236         0x00,                   /* 0d/13 - lbc */
237         0x00,                   /* 0e/14 - pbru */
238         0x00,                   /* 0f/15 - pbrl */
239         0x80,                   /* 10/16 - afei */
240         0x01,                   /* 11/17 - afeii */
241         0x9f,                   /* 12/18 - llic */
242         0x9f,                   /* 13/19 - rlic */
243         0x00,                   /* 14/20 - tlb */
244         0x00,                   /* 15/21 - thb */
245         0x00,                   /* 16/22 - la3mic/reserved */
246         0x00,                   /* 17/23 - ra3mic/reserved */
247         0x00,                   /* 18/24 - afs */
248         0x00,                   /* 19/25 - lamoc/version */
249         0x00,                   /* 1a/26 - mioc */
250         0x00,                   /* 1b/27 - ramoc/reserved */
251         0x20,                   /* 1c/28 - cdfr */
252         0x00,                   /* 1d/29 - res4 */
253         0x00,                   /* 1e/30 - cbru */
254         0x00,                   /* 1f/31 - cbrl */
255 };
256
257 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
258 {
259         if (cp->flags & CS4231_FLAG_EBUS)
260                 return readb(reg_addr);
261         else
262                 return sbus_readb(reg_addr);
263 }
264
265 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
266                             void __iomem *reg_addr)
267 {
268         if (cp->flags & CS4231_FLAG_EBUS)
269                 return writeb(val, reg_addr);
270         else
271                 return sbus_writeb(val, reg_addr);
272 }
273
274 /*
275  *  Basic I/O functions
276  */
277
278 static void snd_cs4231_ready(struct snd_cs4231 *chip)
279 {
280         int timeout;
281
282         for (timeout = 250; timeout > 0; timeout--) {
283                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
284                 if ((val & CS4231_INIT) == 0)
285                         break;
286                 udelay(100);
287         }
288 }
289
290 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
291                             unsigned char value)
292 {
293         snd_cs4231_ready(chip);
294 #ifdef CONFIG_SND_DEBUG
295         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
296                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
297                             "value = 0x%x\n",
298                             reg, value);
299 #endif
300         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
301         wmb();
302         __cs4231_writeb(chip, value, CS4231U(chip, REG));
303         mb();
304 }
305
306 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
307                      unsigned char mask, unsigned char value)
308 {
309         unsigned char tmp = (chip->image[reg] & mask) | value;
310
311         chip->image[reg] = tmp;
312         if (!chip->calibrate_mute)
313                 snd_cs4231_dout(chip, reg, tmp);
314 }
315
316 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
317                            unsigned char value)
318 {
319         snd_cs4231_dout(chip, reg, value);
320         chip->image[reg] = value;
321         mb();
322 }
323
324 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
325 {
326         snd_cs4231_ready(chip);
327 #ifdef CONFIG_SND_DEBUG
328         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
329                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
330                             reg);
331 #endif
332         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
333         mb();
334         return __cs4231_readb(chip, CS4231U(chip, REG));
335 }
336
337 /*
338  *  CS4231 detection / MCE routines
339  */
340
341 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
342 {
343         int timeout;
344
345         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
346         for (timeout = 5; timeout > 0; timeout--)
347                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
348
349         /* end of cleanup sequence */
350         for (timeout = 500; timeout > 0; timeout--) {
351                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
352                 if ((val & CS4231_INIT) == 0)
353                         break;
354                 msleep(1);
355         }
356 }
357
358 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
359 {
360         unsigned long flags;
361         int timeout;
362
363         spin_lock_irqsave(&chip->lock, flags);
364         snd_cs4231_ready(chip);
365 #ifdef CONFIG_SND_DEBUG
366         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
367                 snd_printdd("mce_up - auto calibration time out (0)\n");
368 #endif
369         chip->mce_bit |= CS4231_MCE;
370         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
371         if (timeout == 0x80)
372                 snd_printdd("mce_up [%p]: serious init problem - "
373                             "codec still busy\n",
374                             chip->port);
375         if (!(timeout & CS4231_MCE))
376                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
377                                 CS4231U(chip, REGSEL));
378         spin_unlock_irqrestore(&chip->lock, flags);
379 }
380
381 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
382 {
383         unsigned long flags, timeout;
384         int reg;
385
386         snd_cs4231_busy_wait(chip);
387         spin_lock_irqsave(&chip->lock, flags);
388 #ifdef CONFIG_SND_DEBUG
389         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
390                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
391                             CS4231U(chip, REGSEL));
392 #endif
393         chip->mce_bit &= ~CS4231_MCE;
394         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
395         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
396                         CS4231U(chip, REGSEL));
397         if (reg == 0x80)
398                 snd_printdd("mce_down [%p]: serious init problem "
399                             "- codec still busy\n", chip->port);
400         if ((reg & CS4231_MCE) == 0) {
401                 spin_unlock_irqrestore(&chip->lock, flags);
402                 return;
403         }
404
405         /*
406          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
407          */
408         timeout = jiffies + msecs_to_jiffies(250);
409         do {
410                 spin_unlock_irqrestore(&chip->lock, flags);
411                 msleep(1);
412                 spin_lock_irqsave(&chip->lock, flags);
413                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
414                 reg &= CS4231_CALIB_IN_PROGRESS;
415         } while (reg && time_before(jiffies, timeout));
416         spin_unlock_irqrestore(&chip->lock, flags);
417
418         if (reg)
419                 snd_printk(KERN_ERR
420                            "mce_down - auto calibration time out (2)\n");
421 }
422
423 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
424                                    struct snd_pcm_substream *substream,
425                                    unsigned int *periods_sent)
426 {
427         struct snd_pcm_runtime *runtime = substream->runtime;
428
429         while (1) {
430                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
431                 unsigned int offset = period_size * (*periods_sent);
432
433                 if (WARN_ON(period_size >= (1 << 24)))
434                         return;
435
436                 if (dma_cont->request(dma_cont,
437                                       runtime->dma_addr + offset, period_size))
438                         return;
439                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
440         }
441 }
442
443 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
444                                unsigned int what, int on)
445 {
446         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
447         struct cs4231_dma_control *dma_cont;
448
449         if (what & CS4231_PLAYBACK_ENABLE) {
450                 dma_cont = &chip->p_dma;
451                 if (on) {
452                         dma_cont->prepare(dma_cont, 0);
453                         dma_cont->enable(dma_cont, 1);
454                         snd_cs4231_advance_dma(dma_cont,
455                                 chip->playback_substream,
456                                 &chip->p_periods_sent);
457                 } else {
458                         dma_cont->enable(dma_cont, 0);
459                 }
460         }
461         if (what & CS4231_RECORD_ENABLE) {
462                 dma_cont = &chip->c_dma;
463                 if (on) {
464                         dma_cont->prepare(dma_cont, 1);
465                         dma_cont->enable(dma_cont, 1);
466                         snd_cs4231_advance_dma(dma_cont,
467                                 chip->capture_substream,
468                                 &chip->c_periods_sent);
469                 } else {
470                         dma_cont->enable(dma_cont, 0);
471                 }
472         }
473 }
474
475 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
476 {
477         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
478         int result = 0;
479
480         switch (cmd) {
481         case SNDRV_PCM_TRIGGER_START:
482         case SNDRV_PCM_TRIGGER_STOP:
483         {
484                 unsigned int what = 0;
485                 struct snd_pcm_substream *s;
486                 unsigned long flags;
487
488                 snd_pcm_group_for_each_entry(s, substream) {
489                         if (s == chip->playback_substream) {
490                                 what |= CS4231_PLAYBACK_ENABLE;
491                                 snd_pcm_trigger_done(s, substream);
492                         } else if (s == chip->capture_substream) {
493                                 what |= CS4231_RECORD_ENABLE;
494                                 snd_pcm_trigger_done(s, substream);
495                         }
496                 }
497
498                 spin_lock_irqsave(&chip->lock, flags);
499                 if (cmd == SNDRV_PCM_TRIGGER_START) {
500                         cs4231_dma_trigger(substream, what, 1);
501                         chip->image[CS4231_IFACE_CTRL] |= what;
502                 } else {
503                         cs4231_dma_trigger(substream, what, 0);
504                         chip->image[CS4231_IFACE_CTRL] &= ~what;
505                 }
506                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
507                                chip->image[CS4231_IFACE_CTRL]);
508                 spin_unlock_irqrestore(&chip->lock, flags);
509                 break;
510         }
511         default:
512                 result = -EINVAL;
513                 break;
514         }
515
516         return result;
517 }
518
519 /*
520  *  CODEC I/O
521  */
522
523 static unsigned char snd_cs4231_get_rate(unsigned int rate)
524 {
525         int i;
526
527         for (i = 0; i < 14; i++)
528                 if (rate == rates[i])
529                         return freq_bits[i];
530
531         return freq_bits[13];
532 }
533
534 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
535                                            int channels)
536 {
537         unsigned char rformat;
538
539         rformat = CS4231_LINEAR_8;
540         switch (format) {
541         case SNDRV_PCM_FORMAT_MU_LAW:
542                 rformat = CS4231_ULAW_8;
543                 break;
544         case SNDRV_PCM_FORMAT_A_LAW:
545                 rformat = CS4231_ALAW_8;
546                 break;
547         case SNDRV_PCM_FORMAT_S16_LE:
548                 rformat = CS4231_LINEAR_16;
549                 break;
550         case SNDRV_PCM_FORMAT_S16_BE:
551                 rformat = CS4231_LINEAR_16_BIG;
552                 break;
553         case SNDRV_PCM_FORMAT_IMA_ADPCM:
554                 rformat = CS4231_ADPCM_16;
555                 break;
556         }
557         if (channels > 1)
558                 rformat |= CS4231_STEREO;
559         return rformat;
560 }
561
562 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
563 {
564         unsigned long flags;
565
566         mute = mute ? 1 : 0;
567         spin_lock_irqsave(&chip->lock, flags);
568         if (chip->calibrate_mute == mute) {
569                 spin_unlock_irqrestore(&chip->lock, flags);
570                 return;
571         }
572         if (!mute) {
573                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
574                                 chip->image[CS4231_LEFT_INPUT]);
575                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
576                                 chip->image[CS4231_RIGHT_INPUT]);
577                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
578                                 chip->image[CS4231_LOOPBACK]);
579         }
580         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
581                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
582         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
583                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
584         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
585                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
586         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
587                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
588         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
589                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
590         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
591                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
592         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
593                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
594         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
595                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
596         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
597                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
598         chip->calibrate_mute = mute;
599         spin_unlock_irqrestore(&chip->lock, flags);
600 }
601
602 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
603                                        struct snd_pcm_hw_params *params,
604                                        unsigned char pdfr)
605 {
606         unsigned long flags;
607
608         mutex_lock(&chip->mce_mutex);
609         snd_cs4231_calibrate_mute(chip, 1);
610
611         snd_cs4231_mce_up(chip);
612
613         spin_lock_irqsave(&chip->lock, flags);
614         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
615                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
616                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
617                        pdfr);
618         spin_unlock_irqrestore(&chip->lock, flags);
619
620         snd_cs4231_mce_down(chip);
621
622         snd_cs4231_calibrate_mute(chip, 0);
623         mutex_unlock(&chip->mce_mutex);
624 }
625
626 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
627                                       struct snd_pcm_hw_params *params,
628                                       unsigned char cdfr)
629 {
630         unsigned long flags;
631
632         mutex_lock(&chip->mce_mutex);
633         snd_cs4231_calibrate_mute(chip, 1);
634
635         snd_cs4231_mce_up(chip);
636
637         spin_lock_irqsave(&chip->lock, flags);
638         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
639                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
640                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
641                                (cdfr & 0x0f));
642                 spin_unlock_irqrestore(&chip->lock, flags);
643                 snd_cs4231_mce_down(chip);
644                 snd_cs4231_mce_up(chip);
645                 spin_lock_irqsave(&chip->lock, flags);
646         }
647         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
648         spin_unlock_irqrestore(&chip->lock, flags);
649
650         snd_cs4231_mce_down(chip);
651
652         snd_cs4231_calibrate_mute(chip, 0);
653         mutex_unlock(&chip->mce_mutex);
654 }
655
656 /*
657  *  Timer interface
658  */
659
660 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
661 {
662         struct snd_cs4231 *chip = snd_timer_chip(timer);
663
664         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
665 }
666
667 static int snd_cs4231_timer_start(struct snd_timer *timer)
668 {
669         unsigned long flags;
670         unsigned int ticks;
671         struct snd_cs4231 *chip = snd_timer_chip(timer);
672
673         spin_lock_irqsave(&chip->lock, flags);
674         ticks = timer->sticks;
675         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
676             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
677             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
678                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
679                                chip->image[CS4231_TIMER_HIGH] =
680                                (unsigned char) (ticks >> 8));
681                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
682                                chip->image[CS4231_TIMER_LOW] =
683                                (unsigned char) ticks);
684                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
685                                chip->image[CS4231_ALT_FEATURE_1] |
686                                         CS4231_TIMER_ENABLE);
687         }
688         spin_unlock_irqrestore(&chip->lock, flags);
689
690         return 0;
691 }
692
693 static int snd_cs4231_timer_stop(struct snd_timer *timer)
694 {
695         unsigned long flags;
696         struct snd_cs4231 *chip = snd_timer_chip(timer);
697
698         spin_lock_irqsave(&chip->lock, flags);
699         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
700         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
701                        chip->image[CS4231_ALT_FEATURE_1]);
702         spin_unlock_irqrestore(&chip->lock, flags);
703
704         return 0;
705 }
706
707 static void snd_cs4231_init(struct snd_cs4231 *chip)
708 {
709         unsigned long flags;
710
711         snd_cs4231_mce_down(chip);
712
713 #ifdef SNDRV_DEBUG_MCE
714         snd_printdd("init: (1)\n");
715 #endif
716         snd_cs4231_mce_up(chip);
717         spin_lock_irqsave(&chip->lock, flags);
718         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
719                                             CS4231_PLAYBACK_PIO |
720                                             CS4231_RECORD_ENABLE |
721                                             CS4231_RECORD_PIO |
722                                             CS4231_CALIB_MODE);
723         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
724         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
725         spin_unlock_irqrestore(&chip->lock, flags);
726         snd_cs4231_mce_down(chip);
727
728 #ifdef SNDRV_DEBUG_MCE
729         snd_printdd("init: (2)\n");
730 #endif
731
732         snd_cs4231_mce_up(chip);
733         spin_lock_irqsave(&chip->lock, flags);
734         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
735                         chip->image[CS4231_ALT_FEATURE_1]);
736         spin_unlock_irqrestore(&chip->lock, flags);
737         snd_cs4231_mce_down(chip);
738
739 #ifdef SNDRV_DEBUG_MCE
740         snd_printdd("init: (3) - afei = 0x%x\n",
741                     chip->image[CS4231_ALT_FEATURE_1]);
742 #endif
743
744         spin_lock_irqsave(&chip->lock, flags);
745         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
746                         chip->image[CS4231_ALT_FEATURE_2]);
747         spin_unlock_irqrestore(&chip->lock, flags);
748
749         snd_cs4231_mce_up(chip);
750         spin_lock_irqsave(&chip->lock, flags);
751         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
752                         chip->image[CS4231_PLAYBK_FORMAT]);
753         spin_unlock_irqrestore(&chip->lock, flags);
754         snd_cs4231_mce_down(chip);
755
756 #ifdef SNDRV_DEBUG_MCE
757         snd_printdd("init: (4)\n");
758 #endif
759
760         snd_cs4231_mce_up(chip);
761         spin_lock_irqsave(&chip->lock, flags);
762         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
763         spin_unlock_irqrestore(&chip->lock, flags);
764         snd_cs4231_mce_down(chip);
765
766 #ifdef SNDRV_DEBUG_MCE
767         snd_printdd("init: (5)\n");
768 #endif
769 }
770
771 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
772 {
773         unsigned long flags;
774
775         mutex_lock(&chip->open_mutex);
776         if ((chip->mode & mode)) {
777                 mutex_unlock(&chip->open_mutex);
778                 return -EAGAIN;
779         }
780         if (chip->mode & CS4231_MODE_OPEN) {
781                 chip->mode |= mode;
782                 mutex_unlock(&chip->open_mutex);
783                 return 0;
784         }
785         /* ok. now enable and ack CODEC IRQ */
786         spin_lock_irqsave(&chip->lock, flags);
787         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
788                        CS4231_RECORD_IRQ |
789                        CS4231_TIMER_IRQ);
790         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
791         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
792         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
793
794         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
795                        CS4231_RECORD_IRQ |
796                        CS4231_TIMER_IRQ);
797         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
798
799         spin_unlock_irqrestore(&chip->lock, flags);
800
801         chip->mode = mode;
802         mutex_unlock(&chip->open_mutex);
803         return 0;
804 }
805
806 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
807 {
808         unsigned long flags;
809
810         mutex_lock(&chip->open_mutex);
811         chip->mode &= ~mode;
812         if (chip->mode & CS4231_MODE_OPEN) {
813                 mutex_unlock(&chip->open_mutex);
814                 return;
815         }
816         snd_cs4231_calibrate_mute(chip, 1);
817
818         /* disable IRQ */
819         spin_lock_irqsave(&chip->lock, flags);
820         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
821         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
822         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
823
824         /* now disable record & playback */
825
826         if (chip->image[CS4231_IFACE_CTRL] &
827             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
828              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
829                 spin_unlock_irqrestore(&chip->lock, flags);
830                 snd_cs4231_mce_up(chip);
831                 spin_lock_irqsave(&chip->lock, flags);
832                 chip->image[CS4231_IFACE_CTRL] &=
833                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
834                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
835                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
836                                 chip->image[CS4231_IFACE_CTRL]);
837                 spin_unlock_irqrestore(&chip->lock, flags);
838                 snd_cs4231_mce_down(chip);
839                 spin_lock_irqsave(&chip->lock, flags);
840         }
841
842         /* clear IRQ again */
843         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
844         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
845         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
846         spin_unlock_irqrestore(&chip->lock, flags);
847
848         snd_cs4231_calibrate_mute(chip, 0);
849
850         chip->mode = 0;
851         mutex_unlock(&chip->open_mutex);
852 }
853
854 /*
855  *  timer open/close
856  */
857
858 static int snd_cs4231_timer_open(struct snd_timer *timer)
859 {
860         struct snd_cs4231 *chip = snd_timer_chip(timer);
861         snd_cs4231_open(chip, CS4231_MODE_TIMER);
862         return 0;
863 }
864
865 static int snd_cs4231_timer_close(struct snd_timer *timer)
866 {
867         struct snd_cs4231 *chip = snd_timer_chip(timer);
868         snd_cs4231_close(chip, CS4231_MODE_TIMER);
869         return 0;
870 }
871
872 static const struct snd_timer_hardware snd_cs4231_timer_table = {
873         .flags          =       SNDRV_TIMER_HW_AUTO,
874         .resolution     =       9945,
875         .ticks          =       65535,
876         .open           =       snd_cs4231_timer_open,
877         .close          =       snd_cs4231_timer_close,
878         .c_resolution   =       snd_cs4231_timer_resolution,
879         .start          =       snd_cs4231_timer_start,
880         .stop           =       snd_cs4231_timer_stop,
881 };
882
883 /*
884  *  ok.. exported functions..
885  */
886
887 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
888                                          struct snd_pcm_hw_params *hw_params)
889 {
890         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
891         unsigned char new_pdfr;
892
893         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
894                                          params_channels(hw_params)) |
895                 snd_cs4231_get_rate(params_rate(hw_params));
896         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
897
898         return 0;
899 }
900
901 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
902 {
903         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
904         struct snd_pcm_runtime *runtime = substream->runtime;
905         unsigned long flags;
906         int ret = 0;
907
908         spin_lock_irqsave(&chip->lock, flags);
909
910         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
911                                             CS4231_PLAYBACK_PIO);
912
913         if (WARN_ON(runtime->period_size > 0xffff + 1)) {
914                 ret = -EINVAL;
915                 goto out;
916         }
917
918         chip->p_periods_sent = 0;
919
920 out:
921         spin_unlock_irqrestore(&chip->lock, flags);
922
923         return ret;
924 }
925
926 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
927                                         struct snd_pcm_hw_params *hw_params)
928 {
929         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
930         unsigned char new_cdfr;
931
932         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
933                                          params_channels(hw_params)) |
934                 snd_cs4231_get_rate(params_rate(hw_params));
935         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
936
937         return 0;
938 }
939
940 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
941 {
942         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
943         unsigned long flags;
944
945         spin_lock_irqsave(&chip->lock, flags);
946         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
947                                             CS4231_RECORD_PIO);
948
949
950         chip->c_periods_sent = 0;
951         spin_unlock_irqrestore(&chip->lock, flags);
952
953         return 0;
954 }
955
956 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
957 {
958         unsigned long flags;
959         unsigned char res;
960
961         spin_lock_irqsave(&chip->lock, flags);
962         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
963         spin_unlock_irqrestore(&chip->lock, flags);
964
965         /* detect overrange only above 0dB; may be user selectable? */
966         if (res & (0x08 | 0x02))
967                 chip->capture_substream->runtime->overrange++;
968 }
969
970 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
971 {
972         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
973                 snd_pcm_period_elapsed(chip->playback_substream);
974                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
975                                             &chip->p_periods_sent);
976         }
977 }
978
979 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
980 {
981         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
982                 snd_pcm_period_elapsed(chip->capture_substream);
983                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
984                                             &chip->c_periods_sent);
985         }
986 }
987
988 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
989                                         struct snd_pcm_substream *substream)
990 {
991         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
992         struct cs4231_dma_control *dma_cont = &chip->p_dma;
993         size_t ptr;
994
995         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
996                 return 0;
997         ptr = dma_cont->address(dma_cont);
998         if (ptr != 0)
999                 ptr -= substream->runtime->dma_addr;
1000
1001         return bytes_to_frames(substream->runtime, ptr);
1002 }
1003
1004 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1005                                         struct snd_pcm_substream *substream)
1006 {
1007         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1008         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1009         size_t ptr;
1010
1011         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1012                 return 0;
1013         ptr = dma_cont->address(dma_cont);
1014         if (ptr != 0)
1015                 ptr -= substream->runtime->dma_addr;
1016
1017         return bytes_to_frames(substream->runtime, ptr);
1018 }
1019
1020 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1021 {
1022         unsigned long flags;
1023         int i;
1024         int id = 0;
1025         int vers = 0;
1026         unsigned char *ptr;
1027
1028         for (i = 0; i < 50; i++) {
1029                 mb();
1030                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1031                         msleep(2);
1032                 else {
1033                         spin_lock_irqsave(&chip->lock, flags);
1034                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1035                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1036                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1037                         spin_unlock_irqrestore(&chip->lock, flags);
1038                         if (id == 0x0a)
1039                                 break;  /* this is valid value */
1040                 }
1041         }
1042         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1043         if (id != 0x0a)
1044                 return -ENODEV; /* no valid device found */
1045
1046         spin_lock_irqsave(&chip->lock, flags);
1047
1048         /* clear any pendings IRQ */
1049         __cs4231_readb(chip, CS4231U(chip, STATUS));
1050         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1051         mb();
1052
1053         spin_unlock_irqrestore(&chip->lock, flags);
1054
1055         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1056         chip->image[CS4231_IFACE_CTRL] =
1057                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1058         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1059         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1060         if (vers & 0x20)
1061                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1062
1063         ptr = (unsigned char *) &chip->image;
1064
1065         snd_cs4231_mce_down(chip);
1066
1067         spin_lock_irqsave(&chip->lock, flags);
1068
1069         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1070                 snd_cs4231_out(chip, i, *ptr++);
1071
1072         spin_unlock_irqrestore(&chip->lock, flags);
1073
1074         snd_cs4231_mce_up(chip);
1075
1076         snd_cs4231_mce_down(chip);
1077
1078         mdelay(2);
1079
1080         return 0;               /* all things are ok.. */
1081 }
1082
1083 static const struct snd_pcm_hardware snd_cs4231_playback = {
1084         .info                   = SNDRV_PCM_INFO_MMAP |
1085                                   SNDRV_PCM_INFO_INTERLEAVED |
1086                                   SNDRV_PCM_INFO_MMAP_VALID |
1087                                   SNDRV_PCM_INFO_SYNC_START,
1088         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1089                                   SNDRV_PCM_FMTBIT_A_LAW |
1090                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1091                                   SNDRV_PCM_FMTBIT_U8 |
1092                                   SNDRV_PCM_FMTBIT_S16_LE |
1093                                   SNDRV_PCM_FMTBIT_S16_BE,
1094         .rates                  = SNDRV_PCM_RATE_KNOT |
1095                                   SNDRV_PCM_RATE_8000_48000,
1096         .rate_min               = 5510,
1097         .rate_max               = 48000,
1098         .channels_min           = 1,
1099         .channels_max           = 2,
1100         .buffer_bytes_max       = 32 * 1024,
1101         .period_bytes_min       = 64,
1102         .period_bytes_max       = 32 * 1024,
1103         .periods_min            = 1,
1104         .periods_max            = 1024,
1105 };
1106
1107 static const struct snd_pcm_hardware snd_cs4231_capture = {
1108         .info                   = SNDRV_PCM_INFO_MMAP |
1109                                   SNDRV_PCM_INFO_INTERLEAVED |
1110                                   SNDRV_PCM_INFO_MMAP_VALID |
1111                                   SNDRV_PCM_INFO_SYNC_START,
1112         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1113                                   SNDRV_PCM_FMTBIT_A_LAW |
1114                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1115                                   SNDRV_PCM_FMTBIT_U8 |
1116                                   SNDRV_PCM_FMTBIT_S16_LE |
1117                                   SNDRV_PCM_FMTBIT_S16_BE,
1118         .rates                  = SNDRV_PCM_RATE_KNOT |
1119                                   SNDRV_PCM_RATE_8000_48000,
1120         .rate_min               = 5510,
1121         .rate_max               = 48000,
1122         .channels_min           = 1,
1123         .channels_max           = 2,
1124         .buffer_bytes_max       = 32 * 1024,
1125         .period_bytes_min       = 64,
1126         .period_bytes_max       = 32 * 1024,
1127         .periods_min            = 1,
1128         .periods_max            = 1024,
1129 };
1130
1131 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1132 {
1133         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1134         struct snd_pcm_runtime *runtime = substream->runtime;
1135         int err;
1136
1137         runtime->hw = snd_cs4231_playback;
1138
1139         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1140         if (err < 0)
1141                 return err;
1142         chip->playback_substream = substream;
1143         chip->p_periods_sent = 0;
1144         snd_pcm_set_sync(substream);
1145         snd_cs4231_xrate(runtime);
1146
1147         return 0;
1148 }
1149
1150 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1151 {
1152         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1153         struct snd_pcm_runtime *runtime = substream->runtime;
1154         int err;
1155
1156         runtime->hw = snd_cs4231_capture;
1157
1158         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1159         if (err < 0)
1160                 return err;
1161         chip->capture_substream = substream;
1162         chip->c_periods_sent = 0;
1163         snd_pcm_set_sync(substream);
1164         snd_cs4231_xrate(runtime);
1165
1166         return 0;
1167 }
1168
1169 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1170 {
1171         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1172
1173         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1174         chip->playback_substream = NULL;
1175
1176         return 0;
1177 }
1178
1179 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1180 {
1181         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1182
1183         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1184         chip->capture_substream = NULL;
1185
1186         return 0;
1187 }
1188
1189 /* XXX We can do some power-management, in particular on EBUS using
1190  * XXX the audio AUXIO register...
1191  */
1192
1193 static const struct snd_pcm_ops snd_cs4231_playback_ops = {
1194         .open           =       snd_cs4231_playback_open,
1195         .close          =       snd_cs4231_playback_close,
1196         .hw_params      =       snd_cs4231_playback_hw_params,
1197         .prepare        =       snd_cs4231_playback_prepare,
1198         .trigger        =       snd_cs4231_trigger,
1199         .pointer        =       snd_cs4231_playback_pointer,
1200 };
1201
1202 static const struct snd_pcm_ops snd_cs4231_capture_ops = {
1203         .open           =       snd_cs4231_capture_open,
1204         .close          =       snd_cs4231_capture_close,
1205         .hw_params      =       snd_cs4231_capture_hw_params,
1206         .prepare        =       snd_cs4231_capture_prepare,
1207         .trigger        =       snd_cs4231_trigger,
1208         .pointer        =       snd_cs4231_capture_pointer,
1209 };
1210
1211 static int snd_cs4231_pcm(struct snd_card *card)
1212 {
1213         struct snd_cs4231 *chip = card->private_data;
1214         struct snd_pcm *pcm;
1215         int err;
1216
1217         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1218         if (err < 0)
1219                 return err;
1220
1221         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1222                         &snd_cs4231_playback_ops);
1223         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1224                         &snd_cs4231_capture_ops);
1225
1226         /* global setup */
1227         pcm->private_data = chip;
1228         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1229         strcpy(pcm->name, "CS4231");
1230
1231         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1232                                        &chip->op->dev, 64 * 1024, 128 * 1024);
1233
1234         chip->pcm = pcm;
1235
1236         return 0;
1237 }
1238
1239 static int snd_cs4231_timer(struct snd_card *card)
1240 {
1241         struct snd_cs4231 *chip = card->private_data;
1242         struct snd_timer *timer;
1243         struct snd_timer_id tid;
1244         int err;
1245
1246         /* Timer initialization */
1247         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1248         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1249         tid.card = card->number;
1250         tid.device = 0;
1251         tid.subdevice = 0;
1252         err = snd_timer_new(card, "CS4231", &tid, &timer);
1253         if (err < 0)
1254                 return err;
1255         strcpy(timer->name, "CS4231");
1256         timer->private_data = chip;
1257         timer->hw = snd_cs4231_timer_table;
1258         chip->timer = timer;
1259
1260         return 0;
1261 }
1262
1263 /*
1264  *  MIXER part
1265  */
1266
1267 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1268                                struct snd_ctl_elem_info *uinfo)
1269 {
1270         static const char * const texts[4] = {
1271                 "Line", "CD", "Mic", "Mix"
1272         };
1273
1274         return snd_ctl_enum_info(uinfo, 2, 4, texts);
1275 }
1276
1277 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1278                               struct snd_ctl_elem_value *ucontrol)
1279 {
1280         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1281         unsigned long flags;
1282
1283         spin_lock_irqsave(&chip->lock, flags);
1284         ucontrol->value.enumerated.item[0] =
1285                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1286         ucontrol->value.enumerated.item[1] =
1287                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1288         spin_unlock_irqrestore(&chip->lock, flags);
1289
1290         return 0;
1291 }
1292
1293 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1294                               struct snd_ctl_elem_value *ucontrol)
1295 {
1296         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1297         unsigned long flags;
1298         unsigned short left, right;
1299         int change;
1300
1301         if (ucontrol->value.enumerated.item[0] > 3 ||
1302             ucontrol->value.enumerated.item[1] > 3)
1303                 return -EINVAL;
1304         left = ucontrol->value.enumerated.item[0] << 6;
1305         right = ucontrol->value.enumerated.item[1] << 6;
1306
1307         spin_lock_irqsave(&chip->lock, flags);
1308
1309         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1310         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1311         change = left != chip->image[CS4231_LEFT_INPUT] ||
1312                  right != chip->image[CS4231_RIGHT_INPUT];
1313         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1314         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1315
1316         spin_unlock_irqrestore(&chip->lock, flags);
1317
1318         return change;
1319 }
1320
1321 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1322                                   struct snd_ctl_elem_info *uinfo)
1323 {
1324         int mask = (kcontrol->private_value >> 16) & 0xff;
1325
1326         uinfo->type = (mask == 1) ?
1327                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1328         uinfo->count = 1;
1329         uinfo->value.integer.min = 0;
1330         uinfo->value.integer.max = mask;
1331
1332         return 0;
1333 }
1334
1335 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1336                                  struct snd_ctl_elem_value *ucontrol)
1337 {
1338         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1339         unsigned long flags;
1340         int reg = kcontrol->private_value & 0xff;
1341         int shift = (kcontrol->private_value >> 8) & 0xff;
1342         int mask = (kcontrol->private_value >> 16) & 0xff;
1343         int invert = (kcontrol->private_value >> 24) & 0xff;
1344
1345         spin_lock_irqsave(&chip->lock, flags);
1346
1347         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1348
1349         spin_unlock_irqrestore(&chip->lock, flags);
1350
1351         if (invert)
1352                 ucontrol->value.integer.value[0] =
1353                         (mask - ucontrol->value.integer.value[0]);
1354
1355         return 0;
1356 }
1357
1358 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1359                                  struct snd_ctl_elem_value *ucontrol)
1360 {
1361         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1362         unsigned long flags;
1363         int reg = kcontrol->private_value & 0xff;
1364         int shift = (kcontrol->private_value >> 8) & 0xff;
1365         int mask = (kcontrol->private_value >> 16) & 0xff;
1366         int invert = (kcontrol->private_value >> 24) & 0xff;
1367         int change;
1368         unsigned short val;
1369
1370         val = (ucontrol->value.integer.value[0] & mask);
1371         if (invert)
1372                 val = mask - val;
1373         val <<= shift;
1374
1375         spin_lock_irqsave(&chip->lock, flags);
1376
1377         val = (chip->image[reg] & ~(mask << shift)) | val;
1378         change = val != chip->image[reg];
1379         snd_cs4231_out(chip, reg, val);
1380
1381         spin_unlock_irqrestore(&chip->lock, flags);
1382
1383         return change;
1384 }
1385
1386 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1387                                   struct snd_ctl_elem_info *uinfo)
1388 {
1389         int mask = (kcontrol->private_value >> 24) & 0xff;
1390
1391         uinfo->type = mask == 1 ?
1392                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1393         uinfo->count = 2;
1394         uinfo->value.integer.min = 0;
1395         uinfo->value.integer.max = mask;
1396
1397         return 0;
1398 }
1399
1400 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1401                                  struct snd_ctl_elem_value *ucontrol)
1402 {
1403         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1404         unsigned long flags;
1405         int left_reg = kcontrol->private_value & 0xff;
1406         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1407         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1408         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1409         int mask = (kcontrol->private_value >> 24) & 0xff;
1410         int invert = (kcontrol->private_value >> 22) & 1;
1411
1412         spin_lock_irqsave(&chip->lock, flags);
1413
1414         ucontrol->value.integer.value[0] =
1415                 (chip->image[left_reg] >> shift_left) & mask;
1416         ucontrol->value.integer.value[1] =
1417                 (chip->image[right_reg] >> shift_right) & mask;
1418
1419         spin_unlock_irqrestore(&chip->lock, flags);
1420
1421         if (invert) {
1422                 ucontrol->value.integer.value[0] =
1423                         (mask - ucontrol->value.integer.value[0]);
1424                 ucontrol->value.integer.value[1] =
1425                         (mask - ucontrol->value.integer.value[1]);
1426         }
1427
1428         return 0;
1429 }
1430
1431 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1432                                  struct snd_ctl_elem_value *ucontrol)
1433 {
1434         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1435         unsigned long flags;
1436         int left_reg = kcontrol->private_value & 0xff;
1437         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1438         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1439         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1440         int mask = (kcontrol->private_value >> 24) & 0xff;
1441         int invert = (kcontrol->private_value >> 22) & 1;
1442         int change;
1443         unsigned short val1, val2;
1444
1445         val1 = ucontrol->value.integer.value[0] & mask;
1446         val2 = ucontrol->value.integer.value[1] & mask;
1447         if (invert) {
1448                 val1 = mask - val1;
1449                 val2 = mask - val2;
1450         }
1451         val1 <<= shift_left;
1452         val2 <<= shift_right;
1453
1454         spin_lock_irqsave(&chip->lock, flags);
1455
1456         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1457         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1458         change = val1 != chip->image[left_reg];
1459         change |= val2 != chip->image[right_reg];
1460         snd_cs4231_out(chip, left_reg, val1);
1461         snd_cs4231_out(chip, right_reg, val2);
1462
1463         spin_unlock_irqrestore(&chip->lock, flags);
1464
1465         return change;
1466 }
1467
1468 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1469 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1470   .info = snd_cs4231_info_single,       \
1471   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1472   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1473
1474 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1475                         shift_right, mask, invert) \
1476 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1477   .info = snd_cs4231_info_double,       \
1478   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1479   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1480                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1481
1482 static const struct snd_kcontrol_new snd_cs4231_controls[] = {
1483 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1484                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1485 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1486                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1487 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1488                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1489 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1490                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1491 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1492                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1493 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1494                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1495 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1496                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1497 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1498                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1499 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1500 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1501 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1502 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1503 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1504                 15, 0),
1505 {
1506         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1507         .name   = "Capture Source",
1508         .info   = snd_cs4231_info_mux,
1509         .get    = snd_cs4231_get_mux,
1510         .put    = snd_cs4231_put_mux,
1511 },
1512 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1513                 1, 0),
1514 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1515 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1516 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1517 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1518 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1519 };
1520
1521 static int snd_cs4231_mixer(struct snd_card *card)
1522 {
1523         struct snd_cs4231 *chip = card->private_data;
1524         int err, idx;
1525
1526         if (snd_BUG_ON(!chip || !chip->pcm))
1527                 return -EINVAL;
1528
1529         strcpy(card->mixername, chip->pcm->name);
1530
1531         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1532                 err = snd_ctl_add(card,
1533                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1534                 if (err < 0)
1535                         return err;
1536         }
1537         return 0;
1538 }
1539
1540 static int dev;
1541
1542 static int cs4231_attach_begin(struct platform_device *op,
1543                                struct snd_card **rcard)
1544 {
1545         struct snd_card *card;
1546         struct snd_cs4231 *chip;
1547         int err;
1548
1549         *rcard = NULL;
1550
1551         if (dev >= SNDRV_CARDS)
1552                 return -ENODEV;
1553
1554         if (!enable[dev]) {
1555                 dev++;
1556                 return -ENOENT;
1557         }
1558
1559         err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1560                            sizeof(struct snd_cs4231), &card);
1561         if (err < 0)
1562                 return err;
1563
1564         strcpy(card->driver, "CS4231");
1565         strcpy(card->shortname, "Sun CS4231");
1566
1567         chip = card->private_data;
1568         chip->card = card;
1569
1570         *rcard = card;
1571         return 0;
1572 }
1573
1574 static int cs4231_attach_finish(struct snd_card *card)
1575 {
1576         struct snd_cs4231 *chip = card->private_data;
1577         int err;
1578
1579         err = snd_cs4231_pcm(card);
1580         if (err < 0)
1581                 goto out_err;
1582
1583         err = snd_cs4231_mixer(card);
1584         if (err < 0)
1585                 goto out_err;
1586
1587         err = snd_cs4231_timer(card);
1588         if (err < 0)
1589                 goto out_err;
1590
1591         err = snd_card_register(card);
1592         if (err < 0)
1593                 goto out_err;
1594
1595         dev_set_drvdata(&chip->op->dev, chip);
1596
1597         dev++;
1598         return 0;
1599
1600 out_err:
1601         snd_card_free(card);
1602         return err;
1603 }
1604
1605 #ifdef SBUS_SUPPORT
1606
1607 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1608 {
1609         unsigned long flags;
1610         unsigned char status;
1611         u32 csr;
1612         struct snd_cs4231 *chip = dev_id;
1613
1614         /*This is IRQ is not raised by the cs4231*/
1615         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1616                 return IRQ_NONE;
1617
1618         /* ACK the APC interrupt. */
1619         csr = sbus_readl(chip->port + APCCSR);
1620
1621         sbus_writel(csr, chip->port + APCCSR);
1622
1623         if ((csr & APC_PDMA_READY) &&
1624             (csr & APC_PLAY_INT) &&
1625             (csr & APC_XINT_PNVA) &&
1626             !(csr & APC_XINT_EMPT))
1627                         snd_cs4231_play_callback(chip);
1628
1629         if ((csr & APC_CDMA_READY) &&
1630             (csr & APC_CAPT_INT) &&
1631             (csr & APC_XINT_CNVA) &&
1632             !(csr & APC_XINT_EMPT))
1633                         snd_cs4231_capture_callback(chip);
1634
1635         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1636
1637         if (status & CS4231_TIMER_IRQ) {
1638                 if (chip->timer)
1639                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1640         }
1641
1642         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1643                 snd_cs4231_overrange(chip);
1644
1645         /* ACK the CS4231 interrupt. */
1646         spin_lock_irqsave(&chip->lock, flags);
1647         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1648         spin_unlock_irqrestore(&chip->lock, flags);
1649
1650         return IRQ_HANDLED;
1651 }
1652
1653 /*
1654  * SBUS DMA routines
1655  */
1656
1657 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1658                             dma_addr_t bus_addr, size_t len)
1659 {
1660         unsigned long flags;
1661         u32 test, csr;
1662         int err;
1663         struct sbus_dma_info *base = &dma_cont->sbus_info;
1664
1665         if (len >= (1 << 24))
1666                 return -EINVAL;
1667         spin_lock_irqsave(&base->lock, flags);
1668         csr = sbus_readl(base->regs + APCCSR);
1669         err = -EINVAL;
1670         test = APC_CDMA_READY;
1671         if (base->dir == APC_PLAY)
1672                 test = APC_PDMA_READY;
1673         if (!(csr & test))
1674                 goto out;
1675         err = -EBUSY;
1676         test = APC_XINT_CNVA;
1677         if (base->dir == APC_PLAY)
1678                 test = APC_XINT_PNVA;
1679         if (!(csr & test))
1680                 goto out;
1681         err = 0;
1682         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1683         sbus_writel(len, base->regs + base->dir + APCNC);
1684 out:
1685         spin_unlock_irqrestore(&base->lock, flags);
1686         return err;
1687 }
1688
1689 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1690 {
1691         unsigned long flags;
1692         u32 csr, test;
1693         struct sbus_dma_info *base = &dma_cont->sbus_info;
1694
1695         spin_lock_irqsave(&base->lock, flags);
1696         csr = sbus_readl(base->regs + APCCSR);
1697         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1698                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1699                  APC_XINT_PENA;
1700         if (base->dir == APC_RECORD)
1701                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1702                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1703         csr |= test;
1704         sbus_writel(csr, base->regs + APCCSR);
1705         spin_unlock_irqrestore(&base->lock, flags);
1706 }
1707
1708 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1709 {
1710         unsigned long flags;
1711         u32 csr, shift;
1712         struct sbus_dma_info *base = &dma_cont->sbus_info;
1713
1714         spin_lock_irqsave(&base->lock, flags);
1715         if (!on) {
1716                 sbus_writel(0, base->regs + base->dir + APCNC);
1717                 sbus_writel(0, base->regs + base->dir + APCNVA);
1718                 if (base->dir == APC_PLAY) {
1719                         sbus_writel(0, base->regs + base->dir + APCC);
1720                         sbus_writel(0, base->regs + base->dir + APCVA);
1721                 }
1722
1723                 udelay(1200);
1724         }
1725         csr = sbus_readl(base->regs + APCCSR);
1726         shift = 0;
1727         if (base->dir == APC_PLAY)
1728                 shift = 1;
1729         if (on)
1730                 csr &= ~(APC_CPAUSE << shift);
1731         else
1732                 csr |= (APC_CPAUSE << shift);
1733         sbus_writel(csr, base->regs + APCCSR);
1734         if (on)
1735                 csr |= (APC_CDMA_READY << shift);
1736         else
1737                 csr &= ~(APC_CDMA_READY << shift);
1738         sbus_writel(csr, base->regs + APCCSR);
1739
1740         spin_unlock_irqrestore(&base->lock, flags);
1741 }
1742
1743 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1744 {
1745         struct sbus_dma_info *base = &dma_cont->sbus_info;
1746
1747         return sbus_readl(base->regs + base->dir + APCVA);
1748 }
1749
1750 /*
1751  * Init and exit routines
1752  */
1753
1754 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1755 {
1756         struct platform_device *op = chip->op;
1757
1758         if (chip->irq[0])
1759                 free_irq(chip->irq[0], chip);
1760
1761         if (chip->port)
1762                 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1763
1764         return 0;
1765 }
1766
1767 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1768 {
1769         struct snd_cs4231 *cp = device->device_data;
1770
1771         return snd_cs4231_sbus_free(cp);
1772 }
1773
1774 static const struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1775         .dev_free       =       snd_cs4231_sbus_dev_free,
1776 };
1777
1778 static int snd_cs4231_sbus_create(struct snd_card *card,
1779                                   struct platform_device *op,
1780                                   int dev)
1781 {
1782         struct snd_cs4231 *chip = card->private_data;
1783         int err;
1784
1785         spin_lock_init(&chip->lock);
1786         spin_lock_init(&chip->c_dma.sbus_info.lock);
1787         spin_lock_init(&chip->p_dma.sbus_info.lock);
1788         mutex_init(&chip->mce_mutex);
1789         mutex_init(&chip->open_mutex);
1790         chip->op = op;
1791         chip->regs_size = resource_size(&op->resource[0]);
1792         memcpy(&chip->image, &snd_cs4231_original_image,
1793                sizeof(snd_cs4231_original_image));
1794
1795         chip->port = of_ioremap(&op->resource[0], 0,
1796                                 chip->regs_size, "cs4231");
1797         if (!chip->port) {
1798                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1799                 return -EIO;
1800         }
1801
1802         chip->c_dma.sbus_info.regs = chip->port;
1803         chip->p_dma.sbus_info.regs = chip->port;
1804         chip->c_dma.sbus_info.dir = APC_RECORD;
1805         chip->p_dma.sbus_info.dir = APC_PLAY;
1806
1807         chip->p_dma.prepare = sbus_dma_prepare;
1808         chip->p_dma.enable = sbus_dma_enable;
1809         chip->p_dma.request = sbus_dma_request;
1810         chip->p_dma.address = sbus_dma_addr;
1811
1812         chip->c_dma.prepare = sbus_dma_prepare;
1813         chip->c_dma.enable = sbus_dma_enable;
1814         chip->c_dma.request = sbus_dma_request;
1815         chip->c_dma.address = sbus_dma_addr;
1816
1817         if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1818                         IRQF_SHARED, "cs4231", chip)) {
1819                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1820                             dev, op->archdata.irqs[0]);
1821                 snd_cs4231_sbus_free(chip);
1822                 return -EBUSY;
1823         }
1824         chip->irq[0] = op->archdata.irqs[0];
1825
1826         if (snd_cs4231_probe(chip) < 0) {
1827                 snd_cs4231_sbus_free(chip);
1828                 return -ENODEV;
1829         }
1830         snd_cs4231_init(chip);
1831
1832         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1833                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1834                 snd_cs4231_sbus_free(chip);
1835                 return err;
1836         }
1837
1838         return 0;
1839 }
1840
1841 static int cs4231_sbus_probe(struct platform_device *op)
1842 {
1843         struct resource *rp = &op->resource[0];
1844         struct snd_card *card;
1845         int err;
1846
1847         err = cs4231_attach_begin(op, &card);
1848         if (err)
1849                 return err;
1850
1851         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1852                 card->shortname,
1853                 rp->flags & 0xffL,
1854                 (unsigned long long)rp->start,
1855                 op->archdata.irqs[0]);
1856
1857         err = snd_cs4231_sbus_create(card, op, dev);
1858         if (err < 0) {
1859                 snd_card_free(card);
1860                 return err;
1861         }
1862
1863         return cs4231_attach_finish(card);
1864 }
1865 #endif
1866
1867 #ifdef EBUS_SUPPORT
1868
1869 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1870                                           void *cookie)
1871 {
1872         struct snd_cs4231 *chip = cookie;
1873
1874         snd_cs4231_play_callback(chip);
1875 }
1876
1877 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1878                                              int event, void *cookie)
1879 {
1880         struct snd_cs4231 *chip = cookie;
1881
1882         snd_cs4231_capture_callback(chip);
1883 }
1884
1885 /*
1886  * EBUS DMA wrappers
1887  */
1888
1889 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1890                              dma_addr_t bus_addr, size_t len)
1891 {
1892         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1893 }
1894
1895 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1896 {
1897         ebus_dma_enable(&dma_cont->ebus_info, on);
1898 }
1899
1900 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1901 {
1902         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1903 }
1904
1905 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1906 {
1907         return ebus_dma_addr(&dma_cont->ebus_info);
1908 }
1909
1910 /*
1911  * Init and exit routines
1912  */
1913
1914 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1915 {
1916         struct platform_device *op = chip->op;
1917
1918         if (chip->c_dma.ebus_info.regs) {
1919                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1920                 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1921         }
1922         if (chip->p_dma.ebus_info.regs) {
1923                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1924                 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1925         }
1926
1927         if (chip->port)
1928                 of_iounmap(&op->resource[0], chip->port, 0x10);
1929
1930         return 0;
1931 }
1932
1933 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1934 {
1935         struct snd_cs4231 *cp = device->device_data;
1936
1937         return snd_cs4231_ebus_free(cp);
1938 }
1939
1940 static const struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1941         .dev_free       =       snd_cs4231_ebus_dev_free,
1942 };
1943
1944 static int snd_cs4231_ebus_create(struct snd_card *card,
1945                                   struct platform_device *op,
1946                                   int dev)
1947 {
1948         struct snd_cs4231 *chip = card->private_data;
1949         int err;
1950
1951         spin_lock_init(&chip->lock);
1952         spin_lock_init(&chip->c_dma.ebus_info.lock);
1953         spin_lock_init(&chip->p_dma.ebus_info.lock);
1954         mutex_init(&chip->mce_mutex);
1955         mutex_init(&chip->open_mutex);
1956         chip->flags |= CS4231_FLAG_EBUS;
1957         chip->op = op;
1958         memcpy(&chip->image, &snd_cs4231_original_image,
1959                sizeof(snd_cs4231_original_image));
1960         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1961         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1962         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1963         chip->c_dma.ebus_info.client_cookie = chip;
1964         chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1965         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1966         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1967         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1968         chip->p_dma.ebus_info.client_cookie = chip;
1969         chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1970
1971         chip->p_dma.prepare = _ebus_dma_prepare;
1972         chip->p_dma.enable = _ebus_dma_enable;
1973         chip->p_dma.request = _ebus_dma_request;
1974         chip->p_dma.address = _ebus_dma_addr;
1975
1976         chip->c_dma.prepare = _ebus_dma_prepare;
1977         chip->c_dma.enable = _ebus_dma_enable;
1978         chip->c_dma.request = _ebus_dma_request;
1979         chip->c_dma.address = _ebus_dma_addr;
1980
1981         chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
1982         chip->p_dma.ebus_info.regs =
1983                 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
1984         chip->c_dma.ebus_info.regs =
1985                 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
1986         if (!chip->port || !chip->p_dma.ebus_info.regs ||
1987             !chip->c_dma.ebus_info.regs) {
1988                 snd_cs4231_ebus_free(chip);
1989                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1990                 return -EIO;
1991         }
1992
1993         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
1994                 snd_cs4231_ebus_free(chip);
1995                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
1996                             dev);
1997                 return -EBUSY;
1998         }
1999         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2000                 snd_cs4231_ebus_free(chip);
2001                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2002                             dev);
2003                 return -EBUSY;
2004         }
2005
2006         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2007                 snd_cs4231_ebus_free(chip);
2008                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2009                             dev);
2010                 return -EBUSY;
2011         }
2012         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2013                 snd_cs4231_ebus_free(chip);
2014                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2015                 return -EBUSY;
2016         }
2017
2018         if (snd_cs4231_probe(chip) < 0) {
2019                 snd_cs4231_ebus_free(chip);
2020                 return -ENODEV;
2021         }
2022         snd_cs4231_init(chip);
2023
2024         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2025                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2026                 snd_cs4231_ebus_free(chip);
2027                 return err;
2028         }
2029
2030         return 0;
2031 }
2032
2033 static int cs4231_ebus_probe(struct platform_device *op)
2034 {
2035         struct snd_card *card;
2036         int err;
2037
2038         err = cs4231_attach_begin(op, &card);
2039         if (err)
2040                 return err;
2041
2042         sprintf(card->longname, "%s at 0x%llx, irq %d",
2043                 card->shortname,
2044                 op->resource[0].start,
2045                 op->archdata.irqs[0]);
2046
2047         err = snd_cs4231_ebus_create(card, op, dev);
2048         if (err < 0) {
2049                 snd_card_free(card);
2050                 return err;
2051         }
2052
2053         return cs4231_attach_finish(card);
2054 }
2055 #endif
2056
2057 static int cs4231_probe(struct platform_device *op)
2058 {
2059 #ifdef EBUS_SUPPORT
2060         if (of_node_name_eq(op->dev.of_node->parent, "ebus"))
2061                 return cs4231_ebus_probe(op);
2062 #endif
2063 #ifdef SBUS_SUPPORT
2064         if (of_node_name_eq(op->dev.of_node->parent, "sbus") ||
2065             of_node_name_eq(op->dev.of_node->parent, "sbi"))
2066                 return cs4231_sbus_probe(op);
2067 #endif
2068         return -ENODEV;
2069 }
2070
2071 static int cs4231_remove(struct platform_device *op)
2072 {
2073         struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2074
2075         snd_card_free(chip->card);
2076
2077         return 0;
2078 }
2079
2080 static const struct of_device_id cs4231_match[] = {
2081         {
2082                 .name = "SUNW,CS4231",
2083         },
2084         {
2085                 .name = "audio",
2086                 .compatible = "SUNW,CS4231",
2087         },
2088         {},
2089 };
2090
2091 MODULE_DEVICE_TABLE(of, cs4231_match);
2092
2093 static struct platform_driver cs4231_driver = {
2094         .driver = {
2095                 .name = "audio",
2096                 .of_match_table = cs4231_match,
2097         },
2098         .probe          = cs4231_probe,
2099         .remove         = cs4231_remove,
2100 };
2101
2102 module_platform_driver(cs4231_driver);